GPS Basics


GPS Basics



Download: pdf1



1 INTRODUCTION



2 GPS made simple

2.1 The princile of measuring signal transit time

2.1.1 Generating GPS signal transit time

2.1.2 Determining a position on a plane

2.1.3 The effect and correction of time error

2.1.4 Determining a position in 3-D space



3 GPS, THE TECHNOLOGY

3.1 Description of the entire system

3.2 Space segment

3.2.1 Satellite movement

3.2.2 The GPS satellites

3.2.3 Generating the satellite signal

3.3 Control segment

3.4 User segment



4. THE GPS NAVIGATION MESSAGE

4.1 Introduction

4.2 Structure of the navigation message



5. CALCULATING POSITION

5.1 Introduction

5.2 Calculating a position

5.2.1 The principle of measuring signal transit time

5.2.2 Linearisation of the equation

5.2.3 Solving the equation

5.2.4 Summary

5.2.5 Error consideration and satellite signal



6. Co-ordinate systems

6.1 Introduction

6.2 Geoids

6.3 Ellipsoid and datum

6.4 Planar land survey co-ordinates, projection



7. Differential-GPS (DGPS)

7.1 Introduction

7.2 DGPS based on the measurement of signal transittime

7.3 DGPS based on carrier phase measurement



8. DATA FORMATS AND HARDWARE interfaces

8.1 Introduction

8.2 Data interfaces

8.3 Hardware interfaces



9. GPS RECEIVERS

9.1 Basics of GPS handheld receivers

9.2 GPS receiver modules



10 GPS Applicatons

10.1 Introduction

10.2 Description of the various applications

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